Unlike the other offenses on this list, the Cowboys are capable of scaring both their opponents and their own fan base, depending on which Tony Romo exits the huddle. This past week, the Cowboys lost to the Broncos because Romo threw another late interception. But with 506 passing yards and five touchdowns, Romo was the biggest reason they were even in the game. Dez Bryant has matured into one of the NFL's best wide receivers, and running back Demarco Murray is effective when they actually hand him the ball.
Christopher Hanewinckel, USA TODAY Sports